set 1 MCQ Questions & Answers Detailed Explanation

MOST IMPORTANT general science mcq - 16 EXERCISES

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The following question based on light, heat, thermodynamics, wave motion, sound, optics & oscillations topic of general science mcq

Questions : In cold countries, alcohol is preferred to mercury as a thermometric liquid because

(a) Alcohol is a better conductor of heat

(b) Alcohol is cheaper than mercury

(c) Alcohol has a lower freezing point

(d) The world production of alcohol is greater than that of mercury

The correct answers to the above question in:

Answer: (c)

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Read more light heat thermodynamics wave sound optics oscillation Based General Science Questions and Answers

Question : 1

Which of the following parts of eye protects the eye and gives it shape?

a) Yellow spot

b) Choroid

c) Sclera

d) Ciliary muscles

Answer: (c)

Question : 2

Red light is used in traffic signals because

a) It is visible to people even with bad eyesight

b) It is beautiful

c) It has the longest wavelength

d) None of the above

Answer: (c)

Question : 3

Direct viewing of Sun during total solar eclipse causes irreversible damage to eyes. The retinal burn is caused by which one of the following components of the Sun rays?

a) Ultra-violet light

b) Rainbow light

c) Heat

d) Infra-red light

Answer: (a)

Question : 4

An air bubble in water will act like a

a) Concave mirror

b) Convex lens

c) Convex mirror

d) Concave lens

Answer: (d)

Question : 5

Which one of the following does a TV remote control unit use to operate a TV set?

a) Sound waves

b) Micro waves

c) Light waves

d) Radio waves

Answer: (d)

Question : 6

If you go on increasing the stretching force on a wire in a guitar, its frequency.

a) remains unchanged

b) increases

c) decreases

d) None of these

Answer: (b)

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